package com.bai.ucenter.mapper;

import com.bai.ucenter.entity.Member;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author bai
 * @since 2023-08-14
 */
@Mapper
public interface MemberMapper extends BaseMapper<Member> {

    /**
     * 查询某一天注册人数
     * @param day
     * @return
     */
    Integer cuntRegister(@Param("day")String day);
}
